class Settings:
    def __init__(self):
        # 屏幕设置
        self.screen_width = 1200
        self.screen_height = 800
        self.bg_color = (230, 230, 230)

        # 飞船设置
        self.ship_limit = 3

        # 子弹设置
        self.bullet_width = 3
        self.bullet_height = 15
        self.bullet_color = (60, 60, 60)
        # 子弹数量
        self.bullet_allowed = 10

        # 设置外星人下降的速度
        self.fleet_drop_speed = 50.0

        self.speedup_scale = 1.1
        self.score_scale = 1.5

    def initialize_dynamic_settings(self):
        # 飞船的移动速度
        self.ship_speed = 5
        # 子弹速度
        self.bullet_speed = 5.0
        # 外星人速度
        self.alien_speed = 1.0
        # 1表示项右移动， -1 表示向左移动
        self.fleet_direction = 1
        self.alien_points = 50

    def increase_speed(self):
        # 提高速度
        self.ship_speed *= self.speedup_scale
        self.bullet_speed *= self.speedup_scale
        self.alien_speed *= self.speedup_scale

        self.alien_points = int(self.alien_points * self.score_scale)
